[GuiA]

Yes, what you describe is trivial - and it would be similarly trivial to design a module that appears to respect the switch (regardless of Linux/Windows) and yet records things surreptitiously, only to offload it at a later date.

Remember the amount of effort VW was willing to expand to cheat emissions testing.

[jimnotgym]

That's why I like the old Thinkpad with the physical cover and the LED